html,
body {
  height: 100%;
  overflow: hidden;
}

.flex {
  overflow: auto;
}

.navi {
  height: 100%;
}

.logo {
  width: 120px;
  height: 31px;
  background: rgba(255, 255, 255, 0.2);
  margin: 16px 24px 16px 0;
  float: left;
}

.menu {
  line-height: 64px;
}
